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Assessments of components under multiaxial service loading - calculations and experiments

: Sonsino, C.M.; Zenner, H.; Yousefi-Hashtyani, F.; Küppers, M.

Centre Technique des Industries Méchaniques -CETIM-; Air Force Materials Laboratory -AFML-; Deutscher Verband für Materialforschung und -prüfung e.V. -DVM-, Berlin; European Fitness-For-Service Network -FITNET-:
Fatigue design 2005 : 16. - 18. November 2005
Senlis, 2005
11 pp.
International Conference on the Respective Input of the Numerical Simulation and the Experimental Approach in Fatigue Design <2005, Senlis>
Conference Paper
Fraunhofer LBF ()
multiaxial stress-state

This paper is focused on a research project supported by the German automotive industry and international software producers. Six multiaxially loaded components were tested under random multiaxial service loading conditions and evaluated by different algorithms. The results reveal a large scatter of calculated fatigue lives which are, in most cases, on the unsafe side. The contradictory unsatisfactory results are determined by the complex interaction of the multiaxial stress state with cumulative damage. Therefore, in case of safety critical components, experimental structural durability tests must be carried out.